ECCE @ EIC Software
Reference for
ECCE @ EIC
simulation and reconstruction software on GitHub
Home page
Related Pages
Modules
Namespaces
Classes
Files
External Links
File List
File Members
All
Classes
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Friends
Macros
Groups
Pages
G4INCLRecombinationChannel.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4INCLRecombinationChannel.cc
1
//
2
// ********************************************************************
3
// * License and Disclaimer *
4
// * *
5
// * The Geant4 software is copyright of the Copyright Holders of *
6
// * the Geant4 Collaboration. It is provided under the terms and *
7
// * conditions of the Geant4 Software License, included in the file *
8
// * LICENSE and available at http://cern.ch/geant4/license . These *
9
// * include a list of copyright holders. *
10
// * *
11
// * Neither the authors of this software system, nor their employing *
12
// * institutes,nor the agencies providing financial support for this *
13
// * work make any representation or warranty, express or implied, *
14
// * regarding this software system or assume any liability for its *
15
// * use. Please see the license in the file LICENSE and URL above *
16
// * for the full disclaimer and the limitation of liability. *
17
// * *
18
// * This code implementation is the result of the scientific and *
19
// * technical work of the GEANT4 collaboration. *
20
// * By using, copying, modifying or distributing the software (or *
21
// * any work based on the software) you agree to acknowledge its *
22
// * use in resulting scientific publications, and indicate your *
23
// * acceptance of all terms of the Geant4 Software license. *
24
// ********************************************************************
25
//
26
// INCL++ intra-nuclear cascade model
27
// Alain Boudard, CEA-Saclay, France
28
// Joseph Cugnon, University of Liege, Belgium
29
// Jean-Christophe David, CEA-Saclay, France
30
// Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31
// Sylvie Leray, CEA-Saclay, France
32
// Davide Mancusi, CEA-Saclay, France
33
//
34
#define INCLXX_IN_GEANT4_MODE 1
35
36
#include "
globals.hh
"
37
45
#include "
G4INCLRecombinationChannel.hh
"
46
#include "
G4INCLRandom.hh
"
47
#include "
G4INCLKinematicsUtils.hh
"
48
#include "
G4INCLParticleTable.hh
"
49
#include "
G4INCLBinaryCollisionAvatar.hh
"
50
#include "
G4INCLGlobals.hh
"
51
52
// #include <cassert>
53
54
namespace
G4INCL {
55
56
RecombinationChannel::RecombinationChannel
(
Particle
*p1,
Particle
*p2)
57
{
58
if
(p1->
isDelta
()) {
59
// assert(p2->isNucleon());
60
theDelta
= p1;
61
theNucleon
= p2;
62
}
else
{
63
// assert(p1->isNucleon());
64
theDelta
= p2;
65
theNucleon
= p1;
66
}
67
}
68
69
RecombinationChannel::~RecombinationChannel
()
70
{
71
}
72
73
void
RecombinationChannel::fillFinalState
(
FinalState
*
fs
)
74
{
75
// Compute the total available energy in the CM
76
const
G4double
sqrts =
KinematicsUtils::totalEnergyInCM
(
theDelta
,
theNucleon
);
77
78
// Assign the types of the final-state particles
79
switch
(
theDelta
->
getType
()) {
80
case
DeltaPlusPlus
:
81
// assert(theNucleon->getType()!=Proton);
82
theDelta
->
setType
(
Proton
);
83
theNucleon
->
setType
(
Proton
);
84
break
;
85
case
DeltaPlus
:
86
theDelta
->
setType
(
Proton
);
87
break
;
88
case
DeltaZero
:
89
theDelta
->
setType
(
Neutron
);
90
break
;
91
case
DeltaMinus
:
92
// assert(theNucleon->getType()!=Neutron);
93
theDelta
->
setType
(
Neutron
);
94
theNucleon
->
setType
(
Neutron
);
95
break
;
96
default
:
97
INCL_ERROR
(
"Unknown particle type in RecombinationChannel"
<<
'\n'
);
98
break
;
99
}
100
101
// Calculate the momenta of the nucleons in the final state
102
const
G4double
pCM =
KinematicsUtils::momentumInCM
(sqrts,
theDelta
->
getMass
(),
theNucleon
->
getMass
());
103
104
// The angular distribution of final-state nucleons is isotropic
105
ThreeVector
momentum
=
Random::normVector
(pCM);
106
107
// Assign the momenta
108
theDelta
->
setMomentum
(momentum);
109
theNucleon
->
setMomentum
(-momentum);
110
111
// Update the kinetic energies
112
theDelta
->
adjustEnergyFromMomentum
();
113
theNucleon
->
adjustEnergyFromMomentum
();
114
115
// Create the final state
116
fs->
addModifiedParticle
(
theDelta
);
117
fs->
addModifiedParticle
(
theNucleon
);
118
119
}
120
121
}
geant4
tree
geant4-10.6-release
source
processes
hadronic
models
inclxx
incl_physics
src
G4INCLRecombinationChannel.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:45
using
1.8.2 with
ECCE GitHub integration